CMMVC6419E The command failed because one or more of the specified managed disks (MDisks) are in the process of being deleted.
Explanation
When you submit this command, you cannot specify an MDisk that is being deleted with the -force option.
User response
Wait for the delete MDisk operation to complete. Do not include any MDisks that have been deleted in the list of MDisks that you specify, and resubmit the command.